“A prill is a small aggregate or globule of a material, most often a dry sphere, formed from a melted liquid. Prilled is a term used in mining and manufacturing to refer to a product that has been pelletized. The pellets are a neater, simpler form for handling, with reduced dust.
“The material to be prilled must be in a solid state at room temperature and a low-viscosity liquid when melted. Prills are formed by allowing drops of the melted prill substance to congeal or freeze in mid-air after being dripped from the top of a tall prilling tower. Certain agrochemicals such as urea are often supplied in prilled form.
“Fertilizers (ammonium nitrate, urea, NPK fertilizer) and some detergent powders are commonly manufactured as prills”
https://en.wikipedia.org/wiki/Prill
Thanks
Urea is also a decent Grade B explosive when crystallized and washed. Burn rate below military grade, but still ok for IEDs. (DEF used in modern diesel systems is urea.)
Think shotgun pellets. Dropped from the shot tower into water.
Think shotgun pellets. Dropped from the shot tower into water.